gizona, its a slightly different feeling that I think a is most noticeable for more back footed surfers. Just think a little more bite when on a faster wave than a standard square. It will slightly enhance pivot and be more noticeable for a more advanced surfer and as you spend time surfing it.

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Actually, one further question. I have three of the squash tail 9'0". All three are fst. One has black lettering and markings. One has blue. One has green. The black one is significantly heavier than the other two, despite it being the only one of the three that has never been patched. I suspect it is older. Are the older ones heavier? And if I special order new ones, is it safe to assume they will be the lighter versions?

Yeah that's safe. Without knowing a lot about that board, chances are it was built with a heavier lamination... new longboards are also built in our crossfire tech which helps optimize weight and durability...